L66.9
BillableCicatricial alopecia, unspecified
Cicatricial alopecia, unspecified
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- congenital malformations of integument (Q84.-)
Excludes 2
Conditions not included here, but the patient may have both
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- lipomelanotic reticulosis (I89.8)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- viral warts (B07.-)
Also Known As / Clinical Terms
SNOMED CT
- Radiation alopecia22934003
- Alopecia cicatrisata400088006
- Cicatricial alopecia400088006
- Scarring alopecia400088006
- Post-traumatic scar402182004
- Dermatosis caused by therapeutic ionising irradiation402761000
- Dermatosis caused by therapeutic ionizing irradiation402761000
- Dermatosis due to therapeutic ionising irradiation402761000
- Dermatosis due to therapeutic ionizing irradiation402761000
- Disorder of skin due to radiation therapy402761000
- Disorder of skin due to radiotherapy402761000
- Radiotherapy scar403726004
- Scar due to and following radiation therapy403726004
- Scar due to and following radiotherapy403726004
- Cicatricial alopecia caused by ionising radiation403727008
- Cicatricial alopecia caused by ionizing radiation403727008
- Scarring alopecia due to traumatic injury733204008
- Cicatricial alopecia of scalp due to malignant infiltration of skin1256048006
- Cicatricial alopecia of scalp due to malignant neoplasm of skin1256048006
- Scarring alopecia of scalp due to malignant infiltration of skin1256048006
- Scarring alopecia of scalp due to malignant neoplasm of skin1256048006
- Cicatricial alopecia due to infectious disease1256050003
- Scarring alopecia due to infection1256050003
- Scarring alopecia due to infectious disease1256050003
- Cicatricial alopecia due to and following radiotherapy1256051004
- Scarring alopecia due to and following radiotherapy1256051004
Frequently Asked Questions
What is ICD-10 code L66.9?
ICD-10-CM code L66.9 represents "Cicatricial alopecia, unspecified". It is a billable/specific code that can be used on a claim.
Is L66.9 a billable code?
Yes, L66.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is L66.9 in?
L66.9 is in Chapter 12: Diseases of the Skin and Subcutaneous Tissue (codes L00-L99).
What codes cannot be used with L66.9?
L66.9 has Excludes1 notes indicating codes that cannot be used together with it, including: congenital malformations of integument (Q84.-).
What SNOMED CT codes does L66.9 map to?
L66.9 maps to 10 SNOMED CT concepts: 400088006, 403727008, 1256051004, 1256050003, 1256048006, and 5 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for L66.9?
L66.9 is linked to 1 UMLS Concept Unique Identifier: C2936846. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.